A crane is a machine that is used to lift and move heavy loads machines materials and goods for a variety of purposes they are used in all different sectors of industry from construction to manufacturing to shipbuilding and material loading.
Magnetic Contactor.
Magnetic contactors are used for high power applications they allow a lower voltage and current to switch a much higher power circuit so they are generally larger and more heavy duty than control relays enabling them to switch higher power loads on and off for many thousands of cycles.

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